QYL 1Pcs Ignition Coil Pack UF303 E255 Replacement for Chevy Colorado Canyon 2004-2006 Trailblazer Envoy 2002-2005 Compatible with Isuzu Ascender 2003-2008 I-290 I-370 2007-2008 I-280 I-350 2006

This coil a half the cost of a coil from Adv or AZ Auto locally, impressed me. The quality is as from all I can tell the same if not better than OEM or aftermarket PN like Dorman, etc. Good solid weight & feel, sturdy, feels like quality material used to make, obviously since I had a coil that was fried I can tell you first hand it worked when I installed it and here a couple weeks later still going on strong and working fine. Even the packing and the box marketing is impressive. It was wrapped in a thin foam sleeve, surrounded by poppy bubble paper (a good thing since allot of parts I get shipped especially if they are warehouse are damaged since shipping has many times not placed any or not enough packing protection, I like the idea this company protects the part so if the shipper is negligent then bang! babba boobey. No damaged part. Time is money and I do NOT like flippin returns.. Nope, nada. I dont like em one bit!) , and in plastic to protect from moisture. All of that came in a well marketed box identifying what it was ... In fact their packaging is better than most parts I have seen in a long time, and it doesn't feel cheap rather it even feels like good quality too! I would not hesitate to recommend or purchase another coil when I need it.. Absolutely, assuming the price stays the same, I wont even look at another coil!

It's been installed on my 2005 trailblazer for over a month now with no issues. Took care of misfire issue from bad coil. Seems to be well built and appears to be great quality and saved me big money. Just ordered another for my mom's 04 trailblazer with same issue.

Watched NoNonsenseKnowHow's channel on YouTube and replaced these with NO problem. Took about 10 minutes each. 2 years later...no problems and great performance! Highly recommend this product! Also got mine in 1 day! Replaced 1 and then the other 5 later in my 2005 Chevy Trailblazer LT/LS.

For the price, these coils are great. They do work on my 4.2 chevy trilblazer but aren't the same as an ac delco part. I had three of the six that caused a rough idle, the other three ran fine. I'm quessing that internally the coils are just breaking down. Anyway, they will work but not sure for how long.

Let me start off with the price point, after searching on rock auto and autozone and napa this coil was the best priced with shipping out there. The coil looks like it cost more with a nice black finish with the company logo on it witch at first i didnt like but after install I actually like it. I only replaced one coil for cylinder 1. I had a very rough engine plus the service engine soon light on my chevy trailblazer 03. I am tight on money right now and couldnt afford to do all 6 so only the real cause of the problem got the coil. I also did plugs in all 6. I will soon be getting the 6 pack and replace the rest. I genuinely feel that all parts are made in china so people saying chinese crap i dont see that. The coil is nice, fits tight, comes with a new sealand was easy to install. I recomend this as of now, its only been in 3 days but i think it will last.

Had a miss in my 2005 Trailblazer. Same problem as a couple of months ago. I knew it was an ignition coil. I had paid $80 for 1 from Oreillys auto then. When this part arrived I found the 1 from Oreillys had went bad already. Replaced it with this 1 and the miss is gone. Avoid the high priced auto parts store and buy this one. It's already out lasted the higher priced coil. Highly recommend

This is the second one I've bought in a year and they both fixed the codes on different cylinders miss firing. Probably should have just bought all 6 for my 2004 Chev Trailblazer as they will probably go out in the future. Very easy to change out, just take out two 10mm bolts on vortex cover, loosen screws on big clamps. Pull gray clip on connector, squeeze connector and pull out. Lay over top cover out of way and you will see coils 1-6 in order, #1 by fan. again pull gray clip and squeeze connector and remove. Loosen 10mm bolt and pull up on coil to remove. replace everything in reverse order. Shouldn't take a half hour and you probably wont even get your hands dirty.. No reason to spend more money excellent product.

Bought 4 years ago and one finally failed after 120,000 miles. Just bought 5 more. Replacing the rest this weekend.